我收到标题中的错误，它发生在 grub 安装期间以及dpkg --configure -a. 我无法再更新，并且一旦我遇到错误，shell 就没有响应。
谁能帮我？
完整的错误：
freek@home:~$ sudo dpkg --configure -a
Setting up grub-legacy-ec2 (17.1-27-geb292c18-0ubuntu1~16.04.1) ...
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Searching for GRUB installation directory ... found: /boot/grub
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ... …